Improvement in power-looms



2 Sheets--Sheet1.

1. sHpNN;

Pwerl.onms..

Paented March 25, 1873.

Illlllll |IlllIl|IlIlIlIlIllllIIIIIIIIlllllllllllllllilll Illlllllllllllllllllllll Mz P//aro -L/moenAPH/c ca M Masson/ms mams) UNITED STATES PATENT EEICE JOHNA sHrNN, OE PElLADELPHIA, PENNSYLVANIA, AssreNoR oEoNEHALE Hrs RIGHT To JOHN DoBSoN AND JAMES DoBsoN, oF SAME PLAGE.,

IMPRovEMENT PowER-Looivzs.

To all whom it 'may concern:

Be it known that I, JOHN SEINN, of Philadelphia, Pennsylvania, have invented certain Improvements in Power-Looms, of which the following is a specification:

The iirst part of my invention relates to the combination and arrangement of the cordsfor connecting and operating the heddles, which. connections are made at the ends of the heddle-fram es in vertical parallel lines. The cords I prefer to use are made of wire, and each cord is so arranged in the loom that there will be only one joint forming a continuous cord. The second part of my invention relates to the combination and arrangement of eyebolts with the cords and ends of the heddle-frames for the purpose of fastening and adjusting the heddles at their proper height in the loom. The object of my invention is to dispense with buckles, slip-cords, and hooks, and, when a metallic cord is used,with leather straps 5 also, by having an open space at the top of the heddleframe to make it more convenient for the weaver to see and replace the broken ends of the warp in the heddles, also, to give a more steady and vertical movement to the heddles than is produced by the old plans. By the use` of a metallic cord the tie-up is not affected by the changes of the weather, as is the case when leather and brous cords are used.

In describin gthe construction, arrangement, and operation of my invention reference will be had to the accompanying drawing.

Figure 1, Sheet l, is a plan view of the improvements, when operated by vertical levers, on the side of the loom, and also shows the arrangement for wide heddles. Fig. 2, Sheet 1, is a plan view representing the heddles as operated by jacks. On Sheet 1, Figs. 3 and 4 are full-size views of the eyebolts and a section of the cord and heddle-frame. Fig. 1, Sheet 2, is a plan of the improvements when the heddles are operated by horizontal levers or treadle-s placed on the ,side of the loom. Fig. 2, Sheet 2, is a plan, showing the arrangements for connecting the heddle-frames to the cords when the heddles are made of a iibrous mate rial and not strung in a frame, as is the case with wire heddles.

Similar letters in the drawing refer to like parts. a

Arepresents a metallic cord, which I prefer to have made wit-h six strands, each strand composed of seven wires of No. 80 annealed charcoal wire, the whole twisted around a hemp or cotton core, making a wire cord one-eighth (g) of an inch in diameter and of forty-two single wires. grooved pulleys,'as shown in the drawing, and around the ends ofthe levers, in the notches, forming a loop. The two ends of the cord'are joined by a'splice, or a swivel and screw, between the pulleys at the top, making a continuous cord for each heddle-frame with only one joint, and leaving an open space above the heddles and between the vertical cords.

In Fig. l, Sheet 2, the cord is looped at B, and in this loop the end of the horizontal 1ever or treadle is inserted, from which the heddle receives motion. In this plan it requires six pulleys for each heddle, but with vertical levers or jacks it requires only four pulleys, except in wide looms, as is shown in Fig. 1, Sheet l. In arranging the pulleys they are placed at such a distance apart that the cords, when vertical and parallel to each other, will just take in the heddle-frame between them. The end pieces of the heddle-frame are grooved to the depth of onehalf the diameter of the cords.

It will be noticed that the end pieces ofthe heddle-frame project a little above and below the cross-rails forming the frame, and in or through these four projections are rings or eyebolts c c c c, each bolt having a screw and nut on it. The cord A; iszmade to freely pass through the eye and nicely t the groove in the end of the frame, and by screwing up the nuts the eye of the bolt will draw the cord tight to the end piece a ofthe hed dle-frame, and, as motion is communicated to the cords, the heddle-frame will be moved. up4 and down in a much better manner than where bow-cords are used. By loosening the nuts on the eyebolts the cord will slip through the eyes, and the frames can be readily adjusted at any particular place de sired. To remove the heddle-frames from the loom, the nuts are removed from the eyebolts and the bolts drawn out of the frame and left on the cord, when other frames can be put in their place, using the Same eye-bolts.

In Fig. 2, Sheet 2, may be seen the arrange- The cord A is passed over the y ment for fastening the heddles to the cords when the heddles are made of cotton, linen, worsted, or other fibrous material, and are not strung in frames, as is the case with wire heddles. The ends of the shaft b are tenoned and fitted to the mortise in the piece a- These pieces are constructed in the same manner as the ends of the frames for the Wire heddles, except that the tenons are fitted loose in the mortise. When it is necessary to remove the heddles the shafts b b are drawn out of the pieces a a, which are left on the cords, and other heddles may be put in their place, as will be desirable When putting new Warps in the loom.

When using a metallic cord the pulleys should not be less than four inches in diameter, and six would be better.

The cords may be fastened to the ends of the heddle-frame's by a clamp or clip, though I prefer an eyebolt, as above described. When wide heddles are used, as is shown in Fig. 1, Sheet l, one end of the center cord is fastened to a hook in the center ofthe shaft, the other end is spliced to the cord running toward the levers or jacks. The splicing of these cords can be so made that the splice can be hardly perceptible. Incase a swivel and screw are used at the joint, all slack can be readily taken up by the screw.

Although I prefer a metallic cord, a cord made vin the form of a round leather strap or made of strands of rawhide or of cotton, flax, hemp, o r other fibrous material may be used, but they are easily affected by the changes of the Weather, causing stretching and shrinking, Which objection is overcome by using a metal cor Claims.

1. I claim the cord A, arranged in vertical and parallel lines and secured to the ends ot' the heddle-frame and connected with the operating parts of the loom, as described.

2. I claim the combination, with the heddleframe end pieces a al, of the eyebolts c c o e for fastening and adjusting the heddle-frames on the cord A, as shown and described.

J OHN SHINN.

Witnesses:

MATTHEW DAY, WILLIAM KNoWLEs. 

